Aerial electric cable.



0. E. EGNE'R & R; F. PREDRIKSSON.

AERIAL ELECTRIC CABLE.

APPLICATION FILED DBO.1,1908.

' 960,291. Patented June 7,1910.

. bong, in the Kingdom of Sweden, engineer,

. UNITED STATES PATENT OFFICE.

cam. EMIL nouns, or STOCKHOLM, AND REINI-IOLD FRITHIOF FREDRIKSSON, or

- GOTTENBORG, SWEDEN.

AERIAL ELECTRIC CABLE.

Specification of Letters Patent.

Application filed December 1, 1308. Serial No. 465,473. e

To all whom it may concern:

dent'of Blekingegatan 63 A, Stockholm, in

the Kingdom of Sweden, engineer, and REIN- IIQLD FRITHIOF FREDRIKSSON, asubject of the King of Sweden, and resident of Gottenhave inventedcertain new and useful Improvements in Aerial Electric Cables, of

, which the following is a specification, reference being made to theaccompanying drawing.

It has, been heretofore proposed to attach electric cables to carryingropes or wires in order that-the cables may be suspended in the airwithout stretching the cable itself. a The carrying rope or wire hasusually been placed outside the cable and by means of binding wire orthe like connected with the same, which arrangement however, has had thedisadvantage, that the rope is wholly unprotected and in consequence50foscillations the sheathin of the cable i sf-worn and the cable is thus"likely to be injured. This mode of connection is also rathercomplicatedand expensive.- In certain other arrangements the rope isplaced inside the cable, which arrangement is inconvenient in that therope runs along'the whole length of thecab'le andwhere the cableis notsuscarrying rope or wire and the cable, in the lead ,press, with alead-sheathing, which sheathings are integral, whereby a simple exteriorconnection between cable and rope is formed. This method of manufacturemaybe carried out very quickly and cheaply. The-rope is protectedand'cannot leave the cable and as it lies outside the cable it can beloosened or removed in. cases where itis not required. I V V In. theaccompanying drawing, Figure 1 is a transverse section and -Fig. 2 anelevation of a cable embodying the present improvements.

1 is the core of conducting wires insulated from'each other by means ofpaper, or in some other suitable manner, and 2 the leadsheathingsurrounding the core.

3 is a strong wire, a wire rope or the like, also surrounded by alead-sheathing which is formed simultaneously with the leadsheathing ofthe cable in such a way that both forni one piece. i

The rope 3 serves as a carrying rope when the cable is suspended in theair. In order to attach the rope to the supports. it may be separatedfrom the cable by cutting longitudinally the Web by means of which thetwo lead-sheathings are connected, thus separating the same, asillustrated in Fig. 2. The suspending rope 3 with itslead casing maythen be stretched by means of a wire stretcher, until a suitabledeflection of the cable is obtained, without the cable itself beingstretched whereby it could be injured, and when the rope has beensuitably stretched it is fixed to its support. It will Patented J une7,1910.

be'obvions that instead of a single suspending rope, two or more suchropes maybe employed, these being suitably arranged about the cable. I

A cable constructed in the manner above described is speciallyadvantageous for conductors in an elevated position against a wall. Insuch a case, the conductor may be attached to the wall by means of nailsor the like, inserted between the cable and the suspending rope.

Having now described our invention,'what we claim as new and desire tosecure by Letters Patent-is:- I

' In an electric cable the combination with a sheathing and conductingwires arranged therein, of means for suspending said cable .comprisin asheathed carrier, the sheathing of'which 1s integral with thesheathingof the cable.

In witness whereof we have hereunto set our hands in presence of twowitnesses.

CARL EMIL EGNER. REINHOLQ FRI'IHIOF FREDRIKSSON.

